I need to be able to display a map in a Lambert Projection and the map data I have is in Lat-Long points. Here is what I am thinking. I was hoping that I could transform the projection matrix and then just draw the raw Lat-Longs in the modelview matrix and perform the projection in hardware instead of having to do it in software. Is this the right way to do it or am I totally off my rocker? And if this is correct, how should I go about converting the formula into a matrix?

That was very informative, but it was based on a different projection. But it may still be helpful in the future! We have a formula for converting from Lat, Long to X, Y based on a center point to obtain a Lambert Azimuthal Projection. What I would like to do is find a way to translate this into a series of affine transformations so that I can use them to manipulate the projection matrix...but I have no idea how to do this! Can anyone point me in the right direction to start this process?

As far as I know a Lambert projection isn't an affine transformation, which means you can't decompose it into a series of affine transformations. From lon-lat to x-y space, equidistant cylindrical is the only affine projection I'm aware of.

In the article that dranonymous sent me it shows how to use affine transforms to create orthographic and Mercator projections. Also Matlab stores all equations internally as matricies, so I am inclined to belive that it is possible! But I am new to all this so I could just be naive.

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